DE10021936A1 - Fuel additive composition comprises a detergent additive, a carrier oil mixture consisting of a synthetic carrier oil and a mineral carrier oil, and optionally further fuel additive components - Google Patents

Abstract

Fuel additive composition comprises a detergent additive; a carrier oil mixture consisting of a synthetic carrier oil and a mineral carrier oil; and optionally further fuel additive components.

Description

The invention relates to gasoline fuel additive compositions and with these additive fuels for gasoline engines, whereby the gasoline additive packages according to the invention in addition to one very good performance in keeping the intake system clean very high viscosity properties, especially at low temperatures, exhibit.

Carburetor and intake systems of gasoline engines, but also injection Fuel metering systems are becoming increasingly popular contaminated by dust particles from the Air, unburned hydrocarbon residues from the combustion chamber and the crankcase ventilation vented into the carburetor gases are caused.

These residues shift the air-fuel ratio in the Idling and in the lower part of the load range, so that the mixture is poor rer, the combustion incomplete and again the proportions un burned or partially burned hydrocarbons in the exhaust gas Get better and gasoline consumption increases.

It is known that in order to avoid these disadvantages, fuel wheel additives for keeping valves and carburetor or injection clean systems of gasoline engines are used (see e.g. M. Rossen Beck in catalysts, surfactants, mineral oil additives, ed. J. Falbe, U. Hasserodt, p. 223, G. Thieme Verlag, Stuttgart 1978).

Depending on the mode of action but also the preferred place of action of such There are two generations of detergent additives today.

The first generation of additives was only able to form storage prevent ingestion in the intake system, but not existing ones Remove deposits again, whereas the modern additives the second generation can do both (keep-clean and clean-up effect), in particular because of her excellent thermal stability at higher temperature zones, namely on the intake valves. Such detergents that a variety chemical substance classes, for example Polyalkenamines, polyetheramines, polybutene-Mannich bases or  Polybutensuccinimide, generally come in combination with Carrier oils and some other additive components, such as. B. Corrosion inhibitors and demulsifiers, for use. The tears Geröle perform a solvent or washing function in combination with the detergents. Carrier oils are usually high dend, viscous, thermostable liquids, which the hot me Cover the metal surface and thereby the formation or deposition prevent contamination of the metal surface.

Such formulations of detergents with carrier oils can in principle be classified as follows (depending on the type of carrier oils (carrier oil):

• a) Mineral oil based (i.e. only mineral oil based (mineral) carrier oils used),
• b) fully synthetic (i.e. only synthetic carrier oils used) or to a lesser extent
• c) semi-synthetic (i.e. mixtures of mineral oil ba sender and synthetic carrier oils used).

It is known from the prior art that such described Additive formulations are used in petrol. There at generally applies that fully synthetic additive packages better possess purifying properties as mineral oil-based. Wei Furthermore, it is generally true that such fully synthetic additive pa kete lower viscosities, particularly clearly with lower ones Temperatures as formulations based on mineral oil. So far, fully synthetic detergent additive packages have Significant advantages, as they keep good intake system clean Properties, especially at lower temperatures, better handled have and can be processed.

In the classes of purely mineral oil-based and semisynthetic formulations fully exist compared to the above synthetic additive packages a need for optimization.

It was therefore the task of a semi-synthetic fuel additive to provide packages for petrol, which are both through improved viscosity properties as well as very distinguish good cleaning effects in the intake system.

It has now been found according to the invention that by the manufacturer defined mixtures of mineral oil-based and synthetic table carrier oils in combination with detergent additives Formu lations for petrol that can be provided both have very good properties with regard to the intake system  tion as well as their low-temperature viscosity sen.

Such semisyn according to the invention surprisingly showed thetic additive formulations that they are a very good performance regarding their cleanliness properties guarantee and also by surprisingly significantly lower Characterize viscosities at lower temperatures. Lower Viscosities in additive formulations in turn mean advantages during processing, because to set the desired viscosity less solvent must be used.

A first object of the invention therefore relates to fuel additive compositions, which are characterized in that they

• a) at least one detergent additive;
• b) comprising a carrier oil mixture
  • a) at least one synthetic carrier oil; and
  • b) at least one mineral carrier oil; and
• c) optionally further customary fuel additive components

contain.

Preferred fuel additive compositions are those whose mineral carrier oil component has a viscosity of approximately 250 to a maximum of approximately 410 mm ² / s, in particular approximately 350 to a maximum of 410 mm ² / s, determined at + 20 ° C. according to DIN 51562, part 1.

Further preferred fuel additive compositions according to the invention are those whose synthetic carrier oil component has a viscosity of approximately 120 to approximately 270 mm ² / s, in particular approximately 140 to approximately 240 mm ² / s, determined at + 20 ° C. according to DIN 51562, part 1 points.

Contain particularly preferred fuel additive compositions mineral carrier oil component and synthetic carrier oil component nente in a weight ratio of about 10: 1 to about 1:10, in particular about 5: 1 to about 1: 5, preferably about 4: 1 to about 1: 4.

The weight ratio of detergent additive component to sluggish röl component (sum of mineral and synthetic sluggishness röl) is in the range of about 1:20 to 20: 1, especially about 1:10 to 10: 1, preferably about 1: 5 to about 5: 1 or about 2: 3 up to about 4: 1.  

For example, contain useful fuel additive compositions

• a) about 10 to 80% by weight, for example about 40 to 80% by weight, Detergent additive (s);
• b) about 20 to 90% by weight, for example about 20 to 60% by weight Carrier oil mixture; and
• c) optionally 0 to 30 wt .-%, for example about 1 to 20 wt .-%, other common fuel additive components

contains.

Fuel additive compositions preferred according to the invention comprise, as detergent additive component (component a), a detergent additive selected from polyalkene monomer and polyamines, poly ether amines and mixtures thereof. Examples of useful poly ether amines are poly-C ₂ -C ₆ -alkylene oxide amines, and examples of poly lyalkenamines are poly-C ₂ -C ₆ -alkenamines, and functional derivatives thereof, each with a preferred Mn of about 150 to 5000, preferably about 500 to 2000, especially about 700 to 1500 g. In this context, “amines” include both mono- and polyamines, preferably with up to 6 nitrogen atoms.

Polyalkene mono- or polyalkene polyamines or functional derivatives thereof which can be used according to the invention are in particular poly-C ₂ -C ₆ -alkenamines or functional derivatives thereof, such as, for. B. based on polypropene, polybutene or polyisobutene.

Examples of functional derivatives of the above additives are Verbin dungen, which, for example in the amine part, one or more polar substituents, especially hydroxyl groups.

Preferred additives that can be used according to the invention are polyalkene mono- or polyalkene polyamines based on polypropene or highly reactive (i.e. with predominantly terminal double bonds - mostly in the alpha and beta position) or conventional (i.e. with predominantly central double bonds) polybutene or polyisobutene with Mn = 150 to 5000, preferably about 500 to 2000, especially about 800 to 1500 g.

Such additives based on highly reactive polyisobutene, wel ches from polyisobutene, which contains up to 20 wt .-% n-butene units may contain, by hydroformylation and reductive amination with ammonia, monoamines or polyamines, such as dimethylaminopropy lamin, ethylenediamine, diethylenetriamine, triethylenetetramine or  Tetraethylene pentamine, in particular, can be produced known from EP-A-244 616 or EP-A-0 578 323.

One goes in the production of additives from polybutene or butt lyisobutene with predominantly central double bonds (mostly in the beta and gamma position), the manufacturing process is available by chlorination and subsequent amination or by oxides tion of the double bond with air or ozone to carbonyl or car boxyl compound and subsequent amination under reductive (hydrogenating) conditions. For amination, the same amines as above for the reductive amination of the hydro formylated highly reactive polyisobutene can be used. Ent Talking additives based on polypropene are particularly in WO-A-94/24231.

Polyalkenamine ad containing further preferred monoamino groups additives are the hydrogenation products of the reaction products Polyisobutenes with an average degree of polymerization P = 5 to 100 with nitrogen oxides or mixtures of nitrogen oxides and acid substance as described in particular in WO-A-97/03946 are.

Other preferred additives containing monoamino groups are from polyisobutene epoxides by reaction with amines and subsequently dehydration and reduction of the amino alcohols available Chen compounds, such as those in DE-A 196 20 262 are described.

Particularly useful detergent additives of the polyalkenamine type are sold by BASF AG, Ludwigshafen, under the trade name Kerocom PIBA. These contain polyisobutenamines dissolved in aliphatic C ₁₀ -C ₁₄ hydrocarbons and can be used as such in the additive packages according to the invention.

As examples of useful carrier oils or carrier oil liquids (Component b) are combinations of mineral (s) Carrier oil (s) and synthetic carrier oil (s), which with compatible with the additives used and the fuel are.

Suitable mineral carrier oils which the above according to the invention Viscosity criteria are met when processing petroleum falling fractions, such as kerosene or naphtha, brightstock or Base oils with viscosities such as those from the SN class 500-2000; but also aromatic hydrocarbons, paraffini hydrocarbons, and alkoxyalkanols. It is useful if one known as "hydrocrack oil" and in refining  mineral oil fraction (vacuum distillate cut with a boiling range of about 360 to 500 ° C, available from under High pressure catalytically hydrogenated and isomerized and entpa refined natural mineral oil). Are also suitable Mixtures of the mineral carrier oils mentioned above.

Examples of synthetic carrier oils which can be used according to the invention, which meet the above viscosity criterion according to the invention, are selected from: polyolefins, (poly) esters, (poly) alkoxy latates, polyethers, aliphatic polyetheramines, alkylphensequenz launched polyethers, alkylphenol started polyether amines and Carboxylic acid esters of long chain alkanols.

Examples of suitable polyethers or polyetheramines are compounds which preferably contain polyoxy-C ₂ -C ₄ -alkylene groups and which are obtained by reacting C ₂ -C ₆₀ -alkanols, C ₆ -C ₃₀ -alkanediols, mono- or di-C ₂ -C ₃₀ alkylamines, C ₁ -C ₃₀ alkylcyclohexano len or C ₁ -C ₃₀ alkylphenols with 1 to 30 mol ethylene oxide and / or propylene oxide and / or butylene oxide per hydroxyl group or amino group and, in the case of the polyetheramines, by subsequent reductive Amination with ammonia, monoamines or polyamines are available. Such products are described in particular in EP-A-310 875, EP-A-356 725, EP-A-700 985 and US-A-4,877,416. For example, poly-C ₂ -C ₆ alkylene oxide amines or functional derivatives thereof can be used as polyether amines. Typical examples of this are tridecanol or isotridecanolbu toxylates, isononylphenol butoxylates and polyisobutenol butoxylates and propoxylates as well as the corresponding reaction products with ammonia.

Examples of carboxylic acid esters of long-chain alkanols are in particular esters of mono-, di- or tricarboxylic acids with long-chain alkanols or polyols, in particular those with a minimum viscosity of 2 mm ² / s at 100 ° C., as described in particular in DE-A- 38 38 918 are described. Aliphatic or aromatic acids can be used as mono-, di- or tricarboxylic acids; long-chain representatives with, for example, 6 to 24 carbon atoms are particularly suitable as ester alcohols or polyols. Typical representatives of the esters are adipates, phthalates, isophthalates, terephthalates and trimellitates of isooctanol, isononanol, iso decanol and isotridecanol, such as, for. B. di- (n- or isotride cyl) phthalate.

Other suitable carrier oil systems are described, for example in, DE-A-38 26 608, DE-A-41 42 241, DE-A-43 09 074, EP- A-0 452 328 and EP-A-0 548 617, to which express reference is hereby made is taken.

Examples of particularly suitable synthetic carrier oils are alcohol-initiated polyethers with about 5 to 35, such as. B. about 5 to 30, C ₃ -C ₆ alkylene oxide units, such as. B. selected from propyl oxide, n-butylene oxide and i-butylene oxide units, or mixtures thereof. Non-limiting examples of suitable starter alcohols are long-chain alkanols or phelols substituted with long-chain alkyl, the long-chain alkyl radical in particular representing a straight-chain or branched C ₆ -C ₁₈ - in particular C ₈ -C ₁₅ -alkyl radical. Preferred examples are tridecanol and nonylphenol.

An example of a composition preferred according to the invention, typical of a semi-synthetic gasoline additive package, comprises:

• a) about 20 to 80 wt .-%, preferably 40 to 80 wt .-%, little least a polyisobutenamine or a functional deri vates of it
• b) about 20 to 80 wt .-%, preferably about 20 to 60 wt .-%, a mixture of at least one synthetic carrier liquid, such as. B. a polyether, for example composed of about 10 to 35, such as. B. 15 to 30, C ₃ -C ₆ alkylene oxide units, such as. B. propylene oxide, n- and i-butylene oxide units or mixtures thereof, and at least one mineral oil-based carrier oil; the mixing ratio being in the range of about 10: 1 to 1:10.

In addition to the main detergent additive component (a) (polyetheramine and / or polyalkenamine), one or more further detergent additives may be present, provided that the advantageous effects observed according to the invention are not adversely affected thereby. Examples of further detergent additives which can be used are those which have at least one hydrophobic hydrocarbon radical with a number-average molecular weight (Mn) from 85 to 20,000 and at least one polar group selected from among the additive groups (ab) to (ag):

• a) nitro groups, possibly in combination with hydroxyl groups, containing additives;  
• b) hydroxyl groups in combination with mono- or polyamino additives containing groups, at least one stick has atomic properties;
• c) carboxyl groups or their alkali metal or alkaline earth metal additives containing metal salts;
• d) sulfonic acid groups or their alkali metal or alkaline earth additives containing limetal salts;
• e) additives derived from succinic anhydride Groupings with hydroxy and / or amino and / or Contain amido and / or imido groups; and
• f) by Mannich reaction of alkylphenols with aldehydes and mono- or polyamines containing groups additives.

The hydrophobic hydrocarbon residue in these detergent additi ven, which ensures sufficient solubility in the fuel, has a number average molecular weight (Mn) of 85 to 20,000, especially from 113 to 10,000, especially from 300 to 5000. As typical hydrophobic hydrocarbon residue, especially in ver bond with the polar groups (ac), (af) and (ag) the polypropenyl, polybutenyl and polyisobutenyl radical with each because Mn = 150 to 5000, especially 500 to 2500, especially 700 until 2250.

Nitro groups, possibly in combination with hydroxyl groups, contain Additive (ab) are preferably reaction products made of Po lyisobutenes with an average degree of polymerization P = 5 to 100 or 10 to 100 with nitrogen oxides or mixtures of nitrogen oxides and oxygen, as described in particular in WO-A 96/03367 and in WO-A 96/03479. These implementation products usually represent mixtures of pure nitropolyisobutanes (e.g. a, β-dinitropolyisobutane) and mixed hydroxynitropolyiso butanes (e.g. a-nitro-β-hydroxypolyisobutane).

Hydroxyl groups in combination with mono- or polyamino groups Containing additives (ac) are in particular reaction products of polyisobutene epoxides, preferably predominantly obtainable from polyisobutene having terminal double bonds Mn = 150 to 5000, with ammonia, mono- or polyamines as they are are described in particular in EP-A 476 485.

Additives (ad) containing carboxyl groups or their alkali metal or alkaline earth metal salts are preferably copolymers of C ₂ -C ₄₀ -olefins with maleic anhydride with a total molecular weight of 500 to 20,000, the carboxyl groups of which remain, in whole or in part, with the alkali metal or alkaline earth metal salts the rest of the carboxyl groups are reacted with alcohols or amines. Such additives are known in particular from EP-A 307 815. Such additives are mainly used to prevent valve seat wear and, as described in WO-A 87/01126, can advantageously be used in combination with conventional fuel detergents such as poly (iso) butenamines or polyether amines.

Sulphonic acid groups or their alkali metal or alkaline earth metal additives (ae) containing salts are preferably alkali metal or alkaline earth metal salts of an alkyl sulfosuccinic acid ester, as described in particular in EP-A-639 632. Derar additives are mainly used to prevent valves seat wear and can be used in combination with usual Fuel detergents such as poly (iso) butenamines or polyethera mines are used.

Groups derived from succinic anhydride with hydroxy and / or containing amino and / or amido and / or imido groups Additives (af) are preferably corresponding derivatives of poly isobutenyl succinic anhydride, which by reacting con conventional or highly reactive polyisobutene with Mn = 150 to 5000 with maleic anhydride by thermal means or via that chlorinated polyisobutene are available. Of special interest are derivatives with aliphatic polyamines such as ethylene diamine, diethylene triamine, triethylene tetramine or tetraethylene pentamine. Such gasoline fuel additives are particularly in US-A-4,849,572. By Mannich implementation of substi he did phenols with aldehydes and mono- or polyamines Additives (ag) containing generated groups are preferred Reaction products of polyisobutene-substituted phenols with Formaldehyde and mono- or polyamines such as ethylenediamine, Diethy lentriamine, triethylene tetramine, tetraethylene pentamine or dimethyl thylamino propylamine. The polyisobutene-substituted phenols can with conventional or highly reactive polyisobutene Mn = 150 to 5000. Such "polyisobutene Mannich bases" are described in particular in EP-A 831 141.

Further detergent additives suitable according to the invention are shown in described for example in the European patent applications EP-A-0 277 345, EP-A-0 356 725, EP-A-0 484 736, EP-A-0 539 821, EP-A-0 543 225, EP-A-0 548 617, EP-A-0 561 214, EP-A-0 567 810 and EP-A-0 568 873; in the German patent applications DE-A-39 42 860, DE-A-43 09 074, DE-A-43 09 271, DE-A-43 13 088, DE-A-44 12 489, DE-A-044 25 834, DE-A-195 25 938, DE-A-196 06 845, DE-A-196 06 846, DE-A-196 15 404,  DE-A-196 06 844, DE-A-196 16 569, DE-A-196 18 270 and DE-A-196 14 349.

For a more precise definition of the individual listed gasoline power Substance additives are here based on the revelations of the above Writings of the prior art expressly referenced. Other common additives (component (c)) are corrosion inhibitors ren, for example based on Ammo tending to film formation nium salts of organic carboxylic acids or of heterocyclic Aromatics for non-ferrous metal corrosion protection, dyes, antioxidants tien or stabilizers, for example based on amines such as p-phenylenediamine, dicyclohexylamine or derivatives thereof or of phenols such as 2,4-di-tert-butylphenol or 3,5-di-tert-bu tyl-4-hydroxyphenylpropionic acid, demulsifiers, antistatic agents, Metallocenes such as ferrocene or methylcyclopentadienyl manganese tricar bonyl, further lubricity improvers (lubricity additives), such as certain fatty acids, alkenyl succinic acid esters, bis (hydro xyalkyl) fatty amines or hydroxyacetamides and dyes (Mar ker). If necessary, amines are also used to lower the pH tes of fuel added.

Given the fuel additive combinations according to the invention if in combination with one or more of the above other fuel additives with the polar groupings, as well the other components mentioned are added to the fuel siert and develop their effect there. The components or Addi tive can use the fuel individually or as previously prepared Concentrate ("additive package") are added.

As a solvent or diluent (if Addi tive packages) come aliphatic and aromatic hydrocarbons fabrics, e.g. B. solvent naphtha or kerosene.

The fuel additive mixtures according to the invention are the force for example in an amount in the range of 10 to 5000 ppm (mg / kg fuel), preferably 20 to 1500 ppm (mg / kg Fuel).

Any additional fuel additives used the polar groups are usually in the fuel an amount of 10 to 5000 ppm, in particular 50 to 1000 ppm, added and the other components and additives mentioned, if desired, in the usual quantities for this.  

The fuel to which the fuel additive according to the invention added, is not subject to any special conditions restrictions. It can e.g. B. after a gasoline Act according to DIN EN 228. The fuel can be an Otto, for example fuel with an aromatic content of at most 42% by volume, such as e.g. B. 20 to 42 vol .-% and a maximum sulfur content 150 ppm, e.g. B. 0.5 to 150 ppm.

The petrol can also have a maximum olefin content 21 vol .-%, such as. B. from 6 to 21 vol .-%.

The benzene content can be a maximum of 1.0 vol .-%, such as. B. 0.5 to 1.0% by volume; the oxygen content can e.g. B. in the area from 0.1 to 2.7% by weight.

The alcohol and ether content in petrol is normal relatively low. Typical maximum levels are for Me ethanol 3 vol.%, for ethanol 5 vol.%, for isopropanol 10 vol.%, for tert-butanol 7 vol.%, for isobutanol 10 vol.% and for Ethers with 5 or more carbon atoms in the molecule 15 vol .-%.

The summer vapor pressure of petrol is usually maximum 70 kpa, especially 60 kPa (each at 37 ° C).

The research octane number ("RON") of the petrol is in usually 90 to 100. A common range for the corresponding Motor octane number ("MOZ") is 80 to 90.

The specifications are based on customary methods true (DIN EN 228).

The following non-limiting examples serve as an example ren explanation of the invention.

Production example A (according to the invention)

A mixture of 50% by weight of a conventional detergent additive (about 50% by weight of polyisobutenamine with Mn = 1000; dissolved in n-paraffin mixture with a viscosity of <20 mm ² / s at 20 ° C; trade name Kerocom PIBA from BASF), 38% of a mineral base oil (viscosity at + 20 ° C: 407 mm ² / s) and 10% of a synthetic butylene oxide carrier (tridecanol etherified with butylene oxide units) (viscosity at + 20 ° C: 157 mm ² / s).

Production example B (comparison)

A mixture is prepared analogously to Example A, only the mineral carrier oil being replaced by a base oil not according to the invention with a viscosity at + 200C of 432 mm ² / s.

Test Example 1: Comparison of the low temperature viscosities

For examples A (according to the invention) and B (not according to the invention), low-temperature viscosities in mm ² / s (DIN 51562 part 1) are determined at different temperatures. The results are summarized in Table 1 below.

Table 1

It is surprisingly observed for the Addi according to the invention tiv composition a significantly lower increase in viscosity with falling temperature.

Test example 2: Comparison of the IVD performance

Checking the IVD performance of the compositions according to the Examples A and B were in test bench tests with a Merce of the Benz M102E engine tested in accordance with CEC F-05-A-93. The dosing rate Mixtures A and B were each 700 mg / kg. It was han Standard petrol according to EN 228 is used. The results nisse are summarized in Table 2 below.

Table 2

The composition of the invention surprisingly shows a clearly advantageous IVD performance.

Production example C (according to the invention)

A mixture of 60% by weight of a conventional detergent additive (about 50% by weight of polyisobutenamine with Mn = 1000; dissolved in n-paraffin mixture with a viscosity of <20 mm ² / s at 20 ° C; trade name Kerocom PIBA from BASF), 20% by weight of a base oil (viscosity at + 20 ° C: 407 mm ² / s) and 20% by weight of a propylene oxide carrier (tridecanol etherified with propylene oxide units) (viscosity at +20 ° C: 166 mm ² / s).

Production example D (comparison)

Preparation example C is repeated, the mineral carrier oil being replaced by a base oil which is not according to the invention and has a viscosity at + 20 ° C. of 432 mm ² / s.

Production example E (according to the invention)

A mixture of 60% by weight of a conventional detergent additive (about 50% by weight of polyisobutenamine with Mn = 1000; dissolved in n-paraffin mixture with a viscosity of <20 mm ² / s at 20 ° C; trade name Kerocom PIBA from BASF), 20% by weight of a base oil (viscosity at + 20 ° C: 407 mm ² / s) and 20% by weight of a butylene oxide carrier (tridecanol etherified with butylene oxide units) (viscosity at +20 ° C: 157 mm ² / s).

Production example F (comparison)

Preparation example E is repeated, the mineral carrier oil being replaced by a base oil which is not according to the invention and has a viscosity at + 20 ° C. of 432 mm ² / s.

Test example 3

For examples C, D, E and F, low-temperature viscosities in mm ² / s (DIN 51562 part 1) are determined at -20 ° C. The results are summarized in Table 3 below:

Table 3

One observes clearly for the mixtures not according to the invention much higher viscosities at -20 ° C.

Claims (13)

1. Fuel additive composition, characterized in that it

• a) at least one detergent additive;
• b) comprising a carrier oil mixture
  • a) at least one synthetic carrier oil; and
  • b) at least one mineral carrier oil; and
• c) optionally further conventional fuel additive components

contains. 2. Fuel additive composition according to one of the preceding claims, characterized in that the mineral carrier oil component has a viscosity of about 250 to about 410 mm ² / s, determined at + 20 ° C according to DIN 51562, part 1. 3. Fuel additive composition according to claim 2, characterized ge indicates that the mineral carrier oil component is a Carrier oil selected from Kerosene, Naphtha, Brightstock, Base oils with viscosities from the class SN 500-2000; aro matic hydrocarbons, paraffinic hydrocarbons substances, alkoxyalkanols and "hydrocrack oil"; or mix against it. 4. Fuel additive composition according to one of the preceding claims, characterized in that the synthetic carrier oil component has a viscosity of about 120 to about 270 mm ² / s, determined at + 20 ° C according to DIN 51562, part 1. 5. Fuel additive composition according to claim 4, characterized ge indicates that the synthetic carrier oil component is a Carrier oil, selected from polyolefins, (poly) esters, (Poly) alkoxylates, polyethers, aliphatic polyetheramines, alkylphenol started polyethers, alkylphenol started Po lyetheramines and carboxylic acid esters of long-chain alkanols; or mixtures thereof.   6. Fuel additive composition according to one of the preceding the claims, characterized in that mineral Trä Geröl component and synthetic carrier oil component in one Weight ratio from about 10: 1 to about 1:10 included are. 7. Fuel additive composition according to one of the preceding the claims, characterized in that the detergent add ditivkomponent a detergent additive selected from poly alkene monomer and polyamines, polyether amines and mixtures there of includes. 8. Fuel additive composition according to claim 7, characterized in that the detergent additive comprises a poly-C ₂ -C ₆ -alkenamine or poly-C ₂ -C ₆ -alkylene oxide amine. 9. Fuel additive composition according to claim 8, characterized in that the detergent additive comprises a poly-C ₂ -C ₆ -alkenamine min or poly-C ₂ -C ₆ -alkylene oxide amine with Mn = 150 to 5000 µm. 10. Fuel additive composition according to one of the preceding claims, characterized in that it

• a) about 10 to 80% by weight detergent additive (s);
• b) about 20 to 90 wt .-% carrier oil mixture; and
• c) optionally contains 0 to 30% by weight of further customary fuel additive components.

11. Fuel composition, characterized in that it alongside a major amount of a hydrocarbon fuel a detergent-active, reducing inlet valve deposits Amount of an additive composition according to one of the preceding existing claims. 12. Fuel composition according to claim 11, characterized records that the additive composition in a proportion of about 10 to 5000 mg / kg of fuel is contained. 13. Use of a fuel additive composition according to a of claims 1 to 10 for reducing the intake valves deposits in internal combustion engines.